Surfactant Enhanced Recovery
http://en.wikipedia.org/wiki/Groundwater_remediation
http://surfactantassociates.com/resources/environmental_health_factors/
Surfactant-enhanced
recovery injects surfactants
(surface-active agents that are primary ingredient in soap and detergent) into
contaminated groundwater. Once the surfactants have separated from the
groundwater they are re-used.
These dense compounds, such (TCE), sink in groundwater because
they have a higher density than water. They then act as a continuous source for contaminant plumes that can stretch for miles
within an aquifer.
These
compounds may biodegrade very slowly. They are commonly found in the vicinity
of the original spill or leak where capillary forces have trapped them.
The
surfactants used are non-toxic, food-grade, and biodegradable. Surfactant
enhanced recovery is used most often when the groundwater is contaminated by dense non aques phase liquids.
These
dense compounds, sink in groundwater
because they have a higher density than water.
These
compounds may biodegrade very slowly. They are commonly found in the vicinity
of the original spill or leak where capillary forces have trapped them.